Strand twisting apparatus



July 4, 1944- A. E. wlNsLow STRAND TWISTING APPARATUS Filed Oct. 29, 1943 y NVENTORA `'.//nO/-f Ming/ow i Fig. 2 is a sectional view on PatentedJuly 4,'l944 w STRAND TWISfllNG APPARATUS Albert E. Winslow, Mystic, conn., assigner to v Atwood Machine Company,- corporation o! Connecticut Application October 29, 19.43, Serial No. 508,132

(cl. ,5vssi 6 Claims.

This invention relates to a device for the twisting or laying of strand material and more par- 1 ticularly to adevice adapted to impart more than one turn of twist to one or more strands for eachrevolution of the ilyer.

In such a device thepackage or packages from which thestrand material is supplied do notpartake ofthe4 revolution of the nyer. The strands are drawn from the supply package or packages in a manner to form a. loop which is carried by the iiyer around lthe package or packages. Assmiling the supply package to be mounted on a stationary axis, two turns of twist are imparted for each revolution oi the loop about the packf age. The manner in which `the supply package support is held stationary while mounted upon a rotating spindle with the yarn looping about the supply package has beenaccomplished in various ways and it is the means by which this -result is accomplished which is theieature ofthis invention.

One of the objects of this invention is to provide asimpleand emcient manner of positively holding the 'supply package support stationary while being mounted upon the revolving spindlewhich rotates the strands about 'the package support.

Another I object ot this invention is to provide 'a positive drive through the flyer from a stationary frame to 4theI supply package support so as to'preve'nt slip between the driving parts.

Another object of this -invention is to utilize centrifugal force 'which is developed by a rotation f the flyer for maintaining a driving conl lnection between the yer and the stationary Fig. 3 is a section on substantially line 3-1-8 of Fig. 1;

,'Fig. 4 is a sectional view showing the ilyer driving gears.

The invention illustrated in this application f formsan alternative arrangement of a part of a larger machine which is shownin my co-pending application Serial No. 517,859. The supply packages are designated Ill from which the strands of material Il lead into the hollow spindle then downwardly togetherand radially outwardly as at l2 and thence upwardly as at i3 to loop the strands upon themselves, which loop is revolved about the axis of the spindle so that two turns of twist or lay are placed into the strands for each single turn that the loop makes about thespindle. The upwardly extending run of the work i3 is then guided from the machine through the ring Il .and between feed rolls l5 in Fig. 1.

part on the fone hand and the creel or supply package support 'on the other.'

Another object of this invention is to provide an arrangement so that the greater the spindle Speed more positive-will be the driving .connectin between the ilyer and its operating parts.

Another object of the invention is to provide a limit in the outwardly movement of the driv ing connection so that when the connection is by means of gearl 'teeth there willv be no jamming of the teeth one with the other.

i Another object of the invention is to provide a positive driving connection between the relativelyrotatable parts. 'Withthese and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and lparticularly pointed out in the appended claims.

- In the accompanying drawing:

Fig. 1 is a diagrammatic view. illustrating the travel of the strand from the supply package to its .take-up reel with the operating parts shown `in section;

substantially line 2-2`of Fig. 1;

to the hollow bore 3l of the spindle.

is provided with pairs of guideways $0 and ll and i6 and'thence led as at |1 over pulley I8 and over suitable guides I9 and 20 to be packaged as at 2l, the package being operated by a surfacedrive 22 as diagrammatlcally shown The spindle 25 rotatably mounted by means ofbali bearing 26 in the bolster 21 and casing V28 which-is carried by a stationary part 29 consisting of the irameworkof the machine in which it is mounted. 'Ihe spindle is driven by `a. whirl "30 which is xed to the spindle by means of theset screw 3|. An arm A32 supports an annlar. toothed race 33 at one side which is also supported bythe bolt 34 at the other side which race is concentric with the spindle.

A lcreel designated generally 35 has a hub portion 3B and a plate 31 extending outwardly therefrom upon which a plurality of rods 38 are carried for the support of packages l0 "of strand material. Rods l! also similarly supported extend adjacent the packages to serve as a guide about which this strand material Il is led prior to entering the hollow spindle. This creel or;

supply package support 35 is rotatably mounted upon the spindle by means ofball bearings 4l, ll'" the lower of which Il' engages a shoulder 43 on thespindle. The lower portion oi the creel 35 is iianged as at. which provides an inner-annular toothed raceway spindle.

A flyer designated generally as; is formed with a' hub portion Il iixedly mounted upon the spindle to rotate therewith while a plate Il engages the upper end of thishub Ii and extends outwardly therefrom to support the reel or pulley 23 over which the strand material extends. A

recess I! is. provided 4for the reception of Athe other guide pulley 2l which is mounted tangent Hub 41 (see Fig. 3) equally angularly related and in this l5 concentric with; the

.a spring 58 which bears upon the hub'and forces the block outwardly. 'I'he block is heavy enough -however to be thrown outwardly by centrifugal force as the yer rotates. y

In each block there is provided a bore 55 for the reception of a shaft 55 which is rotatably mounted in this bore as a bearing. At the lower end of the shaft 55 there is a gear 51 which engages the annular toothed race 3l while at the upper end of the shaft there is a gear 58 which engages the annular toothed race 45. II'hus, as the flyer 46 rotates the gear 51 will b e driven by its engagement with the annular toothed race 33 to turn the shaft 58. Turning the shaft 55 will turn the gear 5B which will in turn drive the creel by its engagement with the toothed race 45 in the opposite direction. 'I'he annular races 33 and 45 are the same in diameter and also the friction disks 56 and 58 are the same in diameter. Thus, the annular toothed race 45 will remain always in the same relation to the annular toothed race 33. 'I'he annular race 33 is on a' stationary part and accordingly although rota.- tion of the shaft 55 occurs the annular race 45 will maintain the creel stationary or in its same relative position to the stationary part 32, 33 and regardless of the speed of rotation of the yer the supporting creel will remain stationary.

The friction caused by centrifugal force plus the action of spring 53 will be sufficient to provide driving connection.

At either side of the two raceways 33 and 45 there are smooth raceways 60 and 5I. The gear members or drive members 51 and 58 are each provided with shrouds 52 and 63 (see Fig. 4) which extend out beyond the edges of the teeth of the gears 51 and 55 and will engage the annular smooth surfaces 60 and 8| so as to prevent the teeth of these gears from being forced outwardly by centrifugal force an amount to cause the jamming of the teeth. These shrouds thus limit the amount that the teeth may extend into one another so as to maintain them in their correct driving relationship with their pitch circles tangent.

By this arrangement a positive drive occurs between the flyer and the stationary support on the one hand and the floating creel mounted on theflyer on the other hand so that the creelv will not creep or move relative to the stationary support.

I claim:

l. In a. strand twisting device, a spindle, a supply package support with respect to which the spindle is rotatable, an annular toothed race on said support, asecond annular toothed race stationary with respect to said spindle, a flyer carried by the spindle, a. radially slidable block carried by theilyer to -be thrown out by centrifugal forc'eas rotation of the yer occurs, a shaft rotatable in said block, pinions on said shaft to, one engage one toothed race and the other engagetheothertoothed race, andmeansindependent of centrifugal force yieldingly urging said pinions into engagement with said toothed races,

2. In a strand twisting device, a spindle. a supplrpeckuesupptwithrespecttowhicn the with respect to said spindle, an' annular adjacentsaidracaaiiyercarriedbythelpindle. I

aradiallyslidableblockcanledbytheilyerto be thrown out by centrifugal force as rotation ofthe flyer occurs, a shaft rotatable in laid block, pinions on each said shaft to one engage tionary with respect to said spindle, an annular surface at either side of saidrace, a flyer carried by the spinale, a radially slidable block curled by the flyer to be thrown out by centrifugal force as rotation of the flyer occurs, a shaft rotatable in said block, :pinions on said shaft to one engage one toothed race and the other engage the other toothed race, and a pair of shrouds carried .by said shaft one at either side of said pinion to engage said annular surfaces and limit the meshing of said pinions and toothed races.

4. In a. strand twisting device. a spindle, a supply package supnori with respect to which the spindle is rotatable, an annular toothed race on said support, a second annular toothed race stationary with 'respect to said spindle, a flyer carried by the spindle, a plurality of radially slidable blocks carried by the flyer to be thrown out by centrifugal force as rotation of the flyer occurs, a shaft rotatable in each said block, pinions on each said shaft to one engage one toothed race and the other engage the other toothed race, and means independent of centrifugal force yieldingly urging said pinions into engagement with said toothed races.

5. In a strand twisting device, a spindle, a sup-jl ply package sufpport with respect to which the spindle is rotatable. an annular toothed race on spindieiamtatabie, anannulartooihedraceonf said Importen annular surface adjacent said said support, an annular surface adjacent said race, a second annular toothed race stationary with respect to said spindle, an annular surface adjacent said race, a. flyer carried by thesplndle, a plurality of radiallyslidable blocks carried by the flyer to be thrown out by centrifugal force as rotation of the yer occurs, a shaft rotatable 1n each said block, pinions on each said shaft to one engage one toothed race and the other en'- gage the other toothed race, and shrouds carried by each said shaft one adjacent each pinion to engage said annular surfaces and limit the meehing of saidpinions and toothed races.v

6. In a strand twisting device, a spindle, a supply package supportwith respect to which the spindle is rotatable, an annular toothed race on said support, an annularsurface 'at eimer side of said race, a second annular toothed race stationary with respect to said spindle, an annular surface at either side of said race.' a flyer carried by the spindle, a plurality of radially slidable blocks carried bythe flyer to be thrown out by centrifugal force as rotation ofthe flyer occurs, a shaft rotatable in each said block, pinionsonee'chsaidshaftto onemglseone'toothed race and the other enss'e the other toothed race.

ionsandtoothedrces, 

